Thank you soooo much. Just want to add that at the last step in Audio MIDI, I put 48000 Hz but there still is no sound, then I changed it to 44000 (sth) and it works perfectly. Noted, I have a Samsung, and it worked totally fine until today. And I had to play around like that, no idea why…

What do you do if sound is coming out of tv but now isn't and there is no HDMI option to see anymore on input or output ? Been working fine for years now today it has suddenly decided just to play sound via laptop and the HDMI option has disappeared in system preferences. It so annoying… using Macbook OS X Snow Leopard 10.6.8

Thanks bra! Works on LG too. Keep in mind guys that you can't control the volume with your mac. Just your tv. You also forgot to mention that even though your mac says "The selected device has no audio outputs", It still works. Try it. Turn the volume up on your tv.

It's not working for me. My TV, cable, MiniDisplayPort, and macbook are all post-2011 so by all accounts they should be working. But even when I have the display on my TV, my macbook does not recognize any other audio outputs other than internal speakers. Any advice?